Cutting machine



YATTORNEYS.

C. W. HOTTMANN CUTTING MACHINE Filed Oct. 23. 1923 2 Sheets-Sheet 1 March 25 1924.

s a 2 J March 25; 1924. 1,488,250

c. w. HOT TMANN CUTTING MACHINE Filed Oct. 23, 1923 2 Sheets-Sheet 2 & IS IIIIIIIIII/IlllIflIIIIII/IIIIIIIIIMIIIIII/ v I I fliilllllllllllllllllll ATTORNEYS.

Patented Mar. 25., 1924.

CHARLES HOTTMANN, OF PHILADELFHM, PENNSYLVANIA.

CUTTING MACHINE.

Application filed October 23, 1923. Serial No. 670,265.

which while especially adapted to cut meat may be employed to cut to a desired degree of fineness any desired material.

It further coniprehends a novel construction of a stationary casing, novel means for effecting the circulation of the material to be out within said casing and a novel construction and arrangement of cutting mechanism, the cutting elements of which are adapted to travel in the cutting chamber of said stationary casing.

It further comprehends a novel construe tion of cutting knives and novel mechanism for securing them in assembled position.

It further comprehends novel driving mechanism whereby the feeding mechanism and cutting mechanism are driven at a desired speed.

It further comprehends a novel construction and arrangement of a stationary casing within which the material is fed and out said casing being provided with a novel const-ruction of discharge mechanism.

Other novel features of construction and advantage will hereinafter more clearly appear in the detailed description and the appended claims.

For thepurpose of illustrating my invention, I have shown in the accompanying drawings a typical embodiment thereof which is at present'preferred by me, since this embodiment will be found in practice to give satisfactory and reliable results. It is, however, to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of these instrumentalitiesas herein shown and described.

Figure 1 represents a top plan view of a cutting machine, embodying my invention.

Figure 2 represents a vertical section, the section being taken on line 22 of Figure 1. V

Figure 3 represents a section on line 33 of Figure 6.

Figure 4 represents a section on line 4 4 of Figure 7.

Figure 5 represents a section on line 55 of Figure 1.

Figure 6 represents a plan view of one of the elements of the knife mounting.

F igure 7 represents a plan view showing more particularly the manner in which the knives'are assembled with respect to a dish which carries them.

Figure 8 represenm a section on line 88 of Figure 2.

Figure 9 rep-resents an end View of the disc seen in Figures '6' and 7 'Similar numerals of reference indicate corresponding parts.

Referring tothe drawings.

1 designates a supporting framework which is provided with foot flanges in order to adapt it to be secured to the floor or foundation on which it is to be placed.

A stationary casing 2 is supported in any desired manner on the framework 1 and is provided with a chamber 3 which forms a combined feed and cutting chamber. For convenience of manufacture, the side wall of this chamber is of annular formation.

The bottom of the stationary casing 2 is upwardly deflected at its central portion to form a cone-shaped bearing member 4. 5 designates a cover which is preferably formed from a casting and is provided with the bosses 6, see Figure 1, through which passes apintle rod 7 which also passes through the bosses 8 which are carried by the wall of the stationary casing 52 in. any desired manner and which are preferably cast integrally with said casing.

9 designates a stop member, the lower end of which, is secured to the stationary casing 2 by means of fastening devices 10 while its free end is deflected upwardly to form a stop for the cover 5 when moved into its inoperative position, as shown in dotted lines in Figure 5.

The cover 5 is secured in its closed or operative position by means of the nuts 11 which engage the bolts 12 which latter are movably connected with thecasing 2 in any desired manner and,'as shown'in Figure 1, the cover 5 is provided with the open slots 13 into which the bolts 12 can be moved when it is desired to lock the cover 5 in its closed position. Washers let are also pref erably employed. The cover 5 at its forward end is provided with a forwardly ex r in order to form agrasping handle.

shown it as having a pulley 18 adapted to receive a belt (not shown) in order to adapt it to be driven by any source of power.

The shaft 17 is operatively connected in any desired manner to a shaft 19 to be driven by it and for purpose of illustration, I have shown the shaft 17 as provided with a pulley 20 around which passes a belt 21 which also passes around the pulley 22 fixed to the shaft 19. The shaft 19 is journalled in the hangers or bearings 23 secured to the stationary casing 2 in any desired manner. The shaft 19 is provided with a worm 2 1 which meshes with the worm wheel 25, see Figure 5, fixed to a shaft 26, which is journalled in a bearing 27 connected with the casing 2 in any desired manner and also in the head 28 of the conical bearing portion 1.

The shaft. 26 extends upwardly through the head 28 to receive a material feeding member 29 to which it is connected by means of a pin 30 so that it revolves in unison therewith. The body portion of the feeding member 29 has a cone-shaped bearing portion 31 and is recessed to form a clearance 32 to reduce the friction. 33 designates feeding members which, as illustrated, are secured to the lower portion of the member 29 by means of fastening devices 34 and certain of these members have at their outer end the upwardly extending scraper and feed element 35, the outer edges of which are in close proximity to the inner wall of the casing 2 and the inner edge extends upwardly and then inclines outwardly and upwardly, see Figure 5. These scraping and feeding elements 35 are preferably angularly disposed with respect to the longitudinal axis of the feed member 33. The top face of the feed member 33 inclines rearwardly and upwardly, as shown at 36, Figure 2.

The cover 5 is apertured, as indicated at 37, in order that when it is in place the pin 30 is readily accessible, as will be understood by reference to Figure 5. The cutting mechanism is mounted on the main drive or cutting shaft 17 and as illustrated, the shaft 17 has fixed to it by means of a pin 38 a sleeve 39 having at one end a flange 40 provided with the dowel pins ll and at its opposite end this sleeve is threaded to receive a nut l2. The dowels 41 are adapted to pass into the recesses l2 in the first knife carrying disc 43. The knife carrying discs 44: are each of the same construction and each consists of a disc which is centrally apertured, as at. 45, and provided with inwardly dcfleeted key members 16 whereby they are keyed to the sleeve 39 which is longitudinally slotted to receive them. One side of each disc is provided with the blocks 17 preferably arranged parallel to each other and the opposite side of such disc is provided with the oppositely disposed slots 48 having'the raised top members 49 in proximity to which are the pins 50, the tops of which are preferably beveled. 51 designates the knives or cutters which are in the form of a flat piece of steel ground off to form the cutting edge 52 and having in proximity to their rear end an aperture 53 to receive its respective pin 50. l

The disc 13 which is juxtaposed to the flange 10 has the blocks 47 removed otherwise it is of the same construction as the disc 14.

54 designates a washer with which the nut 12 contacts to clamp the knife holders and the knives in their assembled position.

If the knife 51 becomes injured or broken or if for any reason it is desired to replace it with a new one all that it is necessary to do is to loosen the nut 42 to permit the separation of the knife holders 44 so that the knife which is to be removed can be taken out and a new knife inserted by simply moving it into its slot or recess 48 so that it will slide over thebevelled top of the pin which latter will pass into the aperture 53 in such knife. The slot portion or member 19 limits the inward movement of the knives.

In the operation, assuming that the'knife holders and knives have been assembled on the shaft 17, the material to be out such as, for example, beef, is placed in the chamber 3 and if desired the cover 5 may be moved into its open position to facilitate such insertion of the material to be cut.

The motor is then started to drive the shaft 17 which is operatively connected with the shaft 19 to effect the drive of the shaft 26 and thereby of the material feeding mechanism 29, the shafts 19 and 26 are intergeared to causev the feeding mechanism to revolve stricted outlet from theeutting chamber and the knives revolve freely in the current of the fed material preferably in the same direction as the feed so that the revolution of the knives contributes to effect the feed of the material. been cut to a desired degree of" finene'ssQthe slide 55 which is in the form of a plate'hav As soon as the material has factured since the majority of the parts are castings and the machine work involves only simple turning operations.

Special attention is also directed to the sanitary features of my invention. If it is desired to cleanse the machine, the cover 5 can be raised to move the cutting mechanism out of the way, the pin 30 can be removed in order to permit the removal of the feeding mechanism so that all of the parts can be maintained at all times in a sanitary condition. The cutting mechanism is protected by means of a housing or bonnet 60 connected with the cover in any desired manner so that there is no likelihood of an inexperienced operator being injured by the knife.

It has been found in practice that a machine constructed in accordance with my present invention gives very advantageous results as the material to be cut is fed in a wave-like movement to the cutting mechanism and as there is no resistance to the action of the knives in cutting the material, the material does not become heated as in the cutting mechanism of the prior art. This elimination of the feeding of the material is of great advantage in cutting different kinds of meat and in some types of machines it is necessary to cool the meat before completing the cutting operation, all of which is eliminated in my present construction as the meat remains in its cool or normal condition during the cutting operation.

If desired, a stop 61 may be employed to prevent the entire removal of the slide 55 from the machine and attention is chrected to the fact that due to the novel manner in which the knife carries interlock, the knives have a spherical or helical arrangement, so that they can be arranged closely together and a very efficient cutting action obtained.

Having thus described my invention, what I claim as new and desire to secure by Lctters Patent, is

1. In a cutting machine, a stationary "asing having a chamber, rotatably mounted knives extending into said chamber, means adapted to travel beneath said knives to ef feet the feed of the material to be out, and means to actuate said knives.

2. In a cutting machine, a stationary casing having a chamber to receive the material to be cut, cutting mechanism extending into said chamber to act on the material therein, feeding mechanism including a plurality of members adapted to rotate beneath said knives, means to actuate said cutting mechanism, and means actuated by said cutting mechanism to effect the actuation of said feeding mechanism.

3.111 a cutting machine, a stationary casing having a chamber and provided with a controllable discharge outlet in its bottom, cutting mechanism including rotatable knives disposed within said chamber, feeding mechanism including a plurality of members adapted to travel in proximity to the bottom of said chamber and beneath said knives, means to actuate said cutting mechanism, and means'to actuate said feeding mechanism.

4. In a cutting machine, a stationary casing having a controllable outlet in its bottom, a movably mounted cover, means tolock said cover in closed position, cutting mechanism mounted in said cover and including knives disposed within said casing, when the cover is closed, feeding mechanism including a plurality of members mounted to revolve within said casing and beneath said knives, means to actuate said cutting mechanism, and means to actuate said feeding mechanism.

5. In a cutting machine, a stationary casing having a controllable discharge outlet, a cover movably carried by said casing, looking mechanism for said cover, cutting mechanism including a shaft journalled in said cover, knives carried by said shaft, feeding mechanism rotatable within said casing and including a plurality of members adapted to rotate beneath said knives, the top faces of said members being inclined, means to actuate said cutting mechanism, and means to actuate said feeding mechanism.

5 6. In a cutting machine, a stationary casing provided with an annular chamber having a controllable discharge outlet and having its central portion upwardly deflected, feeding mechanism rotatably mounted on said upwardly deflected portion and including a plurality of feeding members to travel in proximity to the bottom of said chamber, certain of said members having at their ends upwardly deflected feeding elements, rotatably mounted knives arranged to enter said chamber on their rotation and act on the material therein, means to effect the rotation of said knives,.and means to actuate said feeding mechanism.

7. In a cutting machine, a stationary casing having a controllable outlet, feeding mechanism including a body portion centrally disposed within said casing and having its outer wall cone-shaped and provided with radially extending feed members, a shaft extending through said casing and connected with said feeding mechanism to actuate it, means to actuate said shaft, and a plurality of rotatable knives adapted to revolve within said casing and between which and the bottom of said casing said feedmembers pass during their travel.

8. A cutting machine, a casing having a chamber to receive the material to be cut, knives rotatably mounted to revolve in the direction of feed in said casing and to travel into said casing during their revolution, means to effect the revolution of said knives and means to effect the feed of the material to be cut in said chamber.

9. In a cutting machine, a stationary casing having an annular sidewall and provided with a controllable discharge outlet, a cover hinged to said casing, cutting mechanism including a shaft mounted in said cover, said casing having its central portion upwardly deflected, a second shaft extending through said deflected portion, feeding mechanism carried by said second shaft and adapted to revolve within said casing and having feeding members to travel beneath said cutting mechanism, an operative con nection between said cutting mechanism shaft and said second shaft to drive the latter, and means to actuate said cuttingmechanism shaft.

CHARLES W. HOTTMANN.

Witnesses H. S. FAIRBANKS, N. BUSSINGER; 

